Improvement in molds for concrete articles



R. B. LANUM.

Molds for Don crate Articles.

Paten ted0ct.26,1875.

ATTDBNEYS UNITED STATES PATENT QFFICJE.

RICHARD B. LANUM, OF MOUNT STERLING, OHIO.

IMPROVEMENT IN MOLDS FOR CONCRETE ARTICLES.

Specification forming part of Letters Patent No. 169,179, dated October26, 1875; application filed September 11, 1875.

To all whom it may concern:

Be it known that I, RICHARD B. LANUM, of Mount Sterling, in the countyof Madison and State of Ohio, have invented a new and Improved Mold forConcrete Articles, of which the following is a specification Myinvention consists of metal linings to concrete molds having loosejoints to let the water escape, the object being to use metal for itssmoothness and capability to make sharp angles, and at the same timehave the lining so that it will not obstruct the escape of the waterasit would if the lining was completely connected, which would retain thewater and thus lose much time in drying the articles molded.

Figure 1 is a section ,of a mold for articles of concrete with liningscontrived according to my invention. the section being taken on the linew w of Fig. 2. Fig. 2 is a section on line y y of Fig. 1. Fig. 3 is anend elevation of the concrete article formed in the mold.

Similar letters of reference indicate corresponding parts.

The form of the mold is, in this case, such as will be used for moldinga semicircular plate or slab, A; but my invention applies to molds ofany form. B is the bottom, 0 the end, and D the top linings, of sheetzinc or any other sheet metal that may be suitable; but instead of beingconnected together and making Water-tight pans, out of which the watercould not pass, each part is separate from the other, making jointssufficiently open to allow the water ample means of escape, so

that the articles molded will dry out and set sufiiciently to be removedfrom the molds much sooner than otherwise, whereby not so many moldswill be needed. The articles are also more easily removed from themolds, because the open joints prevent the suction that

